Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
  • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
  • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
  • F25D23/00—General constructional features
  • F25D23/003—General constructional features for cooling refrigerating machinery
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
  • F25B2339/00—Details of evaporators; Details of condensers
  • F25B2339/04—Details of condensers
  • F25B2339/042—Details of condensers of pcm condensers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
  • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
  • F25B2700/17—Speeds
  • F25B2700/172—Speeds of the condenser fan

Definitions

• the present invention relates to a refrigerator and / or freezer with at least one refrigerated interior and at least one refrigerant circuit having at least one compressor for conveying the refrigerant, at least one condenser for heat dissipation and at least one evaporator for cooling said interior, and at least a fan, which is arranged relative to the condenser such that by means of the fan, an air flow through the condenser can be generated.
• the present invention has the object of developing a refrigerator and / or freezer of the type mentioned in that the fan is operated such that the device is operable with a more efficient or with a more comfortable operating mode.
• At least one control or regulating unit is provided, which is designed such that it varies the speed and / or the running time of the fan in dependence of one or more of the following parameters or data of the compressor: speed, running time, current or current consumption or current flow, torque, output power, recording power of the compressor, pressure difference across the compressor.
• the speed of the fan is set in dependence on which speed the compressor is operated.
• Power variable compressors eg VCC / linear
• VCC / linear Power variable compressors
• These different speeds may, for example, depend on what refrigeration demand is reported by a refrigeration or freezer compartment.
• This aspect of the invention is based on the idea to set the speed of a variable-speed fan so that it depends on the speed of the compressor.
• a higher speed of the fan is set to always be able to dissipate the waste heat compressor via the condenser or the Verillonerabuza always efficient.
• the compressor is operated at an increased power or with an increased runtime.
• the fan speed and / or the running time of the fan is set depending on whether such a special operating mode is selected, d. H. whether there is an increased need for refrigeration or not.
• the present invention relates to a refrigerator and / or freezer with at least one cooled interior and with at least one refrigerant circuit, the at least one compressor for conveying the refrigerant and at least one evaporator for cooling said interior space comprising, as well as with at least one fan and with at least one condensation collecting container for collecting the resulting defrost of the evaporator condensation water, wherein the fan is arranged relative to the condensation collection container such that by means of the fan, an air flow through the condensation collection container can be generated.
• the term "container” is to be understood generally and includes any conceivable medium which is suitable for catching the condensation water.
• This condensation collection container can be arranged, for example, on the compressor or else preferably be arranged elsewhere in the compressor or in the base unit mentioned above.
• At least one control or regulating unit is provided, which is designed such that it determines the speed and / or running time of the fan depending on the amount of condensation water in the condensation collecting container and / or depending on the time of the Evaporator defrosting changed.
• the amount of condensation water present in the condensation-collecting container is detected via a fill-level sensor or in another manner, and the fan speed and / or the fan-run time is set as a function thereof. It is conceivable that the fan speed is set the higher, the more condensate is in the condensation collection container. The same can also apply to the running time of the fan.
• the speed and / or the running time of the fan is changed as a function of the time of the defrost.
• defrosting of the evaporator is carried out at certain time intervals or depending on certain parameters, which is usually a defrost heater is used.
• a defrost heater is usually used. It is conceivable to couple the operation of the fan now at the time of this defrost, for example, to the effect that in a certain period of time after the onset of defrost or at the beginning of the defrosting process, the fan is turned on or operated at a higher speed level.
• the present invention further relates to a refrigerator and / or freezer having at least one refrigerated interior and at least one refrigerant circuit having at least one compressor for conveying the refrigerant and at least one evaporator for cooling said interior, wherein at least one heat storage medium is provided, which is arranged relative to the compressor and / or the condenser so that it receives heat from the compressor and / or condenser and that at least one fan is provided, which is arranged such that it generates an air flow over this heat storage medium.
• the present invention further relates to a refrigerator and / or freezer having at least one cooled interior and at least one refrigerant circuit having at least one compressor for conveying the refrigerant and at least one evaporator for cooling said interior space, wherein at least one control unit and at least one fan is provided, which is in communication with the control or regulating unit, wherein the control or regulating unit is designed such that it the fan depending on the time or time of day and / or depending on the opening of the door and or depending on whether it is the first commissioning of the device or not.
• the setting of the speed and / or running time of the compressor can thus, for example, the above-mentioned parameters time, time of day, door opening, type of commissioning act.
• control or regulating unit is designed such that it controls the fan, in particular with regard to its rotational speed and / or running time as a function of one or more of the parameters: internal temperature of the refrigerator and / or freezer, Operation of the refrigerator and / or freezer, in particular number of compartments to be cooled, ambient temperature, condenser temperature, door opening and choice of a special program such as SuperFrost or SuperCool controls or regulates.
• the speed of the fan and / or its running time is set as a function of the actual temperature in the cooled compartment and / or depending on how many compartments are to be cooled.
• a higher speed is set than when only one compartment is cooled, such as only the cooling part.
• the ambient temperature as a parameter, depending on which the speed or running time of the fan is set, it is conceivable that the sensor z. B. on the electronics, the compressor, etc. is arranged.
• an activation / deactivation or rotational speed takes place via fixed values and / or the gradient.
• the compressor may be a variable-capacity compressor (eg VCC-linear) and the fan speed may be adjusted depending on the speed of the compressor.
• VCC-linear variable-capacity compressor
• the speed and / or running time of the fan depends on one of the parameters mentioned in the context of the present invention or also on several or all of these parameters.
• a speed check may be performed by sensing the speed directly, by sensing the fan voltage, by the condenser temperature, by the condenser pressure, and / or by the temperature around the fan. It is conceivable to make the control of the speed of the fan directly or via a voltage control.
• the fan is operated in parallel with the operation of the compressor or is also delayed in relation to the compressor, i. H. by running after and / or by pre-running.
• An endurance run as well as an emergency operation of the ventilator are also included in the invention.
• the fan is operated in a minimum level, in which the fan operation is particularly quiet.
• This operation can be set, for example, depending on the time of day or time.
• the device has a button or the like, by means of which a corresponding fan operation can be set.
• the device has a receiving unit, are received by the signals from a remote control, such as a smartphone that has a corresponding app. Accordingly, a user can set the fan operation via such a remote control.
• the fan is arranged such that it causes an air duct in the base unit, d. H. is arranged in the base. This applies to all variants of the present invention.
• door is to be understood in general and has any conceivable closure element, such as, for example, a flap, drawer or the like.
• the fan is a variable speed fan.
• a non-speed-controlled fan is also included in the invention.
• the regulation takes place over a certain frequency, z. B. ten seconds on, 20 seconds off, etc.
• the fan is at least temporarily operated even in the standstill of the compressor, which is particularly in the case of relevance that heat should be dissipated from a heat storage medium.
• the "heat storage medium” is also the mass of the condenser itself, ie usually steel. Measurements have shown that the continuous operation of the fan is energetically particularly advantageous.
• a preferred embodiment of the invention is that the fan and / or the compressor and / or the condenser is arranged in the base region of the device.
• the present invention thus preferably relates to a refrigerator and / or freezer with a so-called base unit, in which the compressor and / or the condenser and also the fan is located.
• the air supply or air discharge into and out of the base unit can be done for example via the front of the device.
• means are provided which are designed so that it can be determined by this, whether the air resistance experienced by the fan conveyed air has increased over one or more previous times. This can e.g. by means of the measurement or evaluation of one or more of the parameters mentioned in the context of the present invention, in particular of its time course. Exemplary are the temperature of the condenser or the compressor speed. For example, if we determine that the temperature of the condenser is increasing over time, it can be concluded that the volume flow of the air delivered by the fan has decreased because air resistance has increased. It is conceivable, for example, that the increase in air resistance to contamination of the air inlet area, e.g. the air inlet shutter is due.
• the air inlet can be cleaned.
• a combination of two or three of the aforementioned measures is conceivable and encompassed by the invention.
• the invention also includes that the three variants mentioned are run through as "escalation stages", i. first the display is made, then the increase of the speed and then the flow reversal.
• the embodiment relates to a refrigerator and / or freezer with a body having a cooled interior.
• This cooled interior is surrounded by an inner container whose open side can be closed by an also insulated door or flap or the like.
• a heat insulation for example in the form of PU foam.
• the lower portion of the device is formed by a device base in which the compressor, the condenser and a fan are located, wherein the fan is arranged such that it generates an air flow around the compressor and / or around the condenser in operation.
• the device base is also a condensation water tray, which is arranged so that it absorbs the thawing water arising during defrosting of the evaporator.
• the evaporator can be located, for example, in the rear region of a refrigerator part and / or a freezer part. In the case of a no-frost evaporator, it is defrosted at certain intervals or depending on certain parameters. The condensation then runs through a condensation drainage channel or the like into the condensation collection container located in the base.
• This condensate collection container may be located on the compressor so that the waste heat of the compressor can be used to promote the evaporation of the condensation water.
• the condensation water shell or the condensation water collection container can also be arranged elsewhere, for example below the condenser.
• a heat storage medium may be provided, which is arranged such that the waste heat of the compressor is absorbed by the heat storage medium.
• the fan is switched in discrete stages and / or continuously, i. H. operated either with different speed levels or with a continuously variable speed.
• the fan is operable in a "minimum level", which is provided for a particularly quiet operation of the fan.
• This mode may, for example, depending on the time of day, z. B. silent operation by day, louder operation at night or vice versa.
• the fan can also be operated in a so-called "evaporation stage", which is set, for example, in the context of defrosting a no-frost evaporator. If a lot of condensation occurs, the evaporation is promoted with a higher speed level and / or longer duration of the fan, in which case the fan can optionally be operated in the uptime of the compressor.
• evaporation stage which is set, for example, in the context of defrosting a no-frost evaporator. If a lot of condensation occurs, the evaporation is promoted with a higher speed level and / or longer duration of the fan, in which case the fan can optionally be operated in the uptime of the compressor.
• the fan can also be operated in a "heat storage stage" where the fan runs at a slower rate during the runtime of the compressor than during normal operation of the unit. For this, the fan also runs in the standstill of the compressor, to dissipate the heat from the heat storage medium.
• a "door opening mode” and a “pull-down mode” can be used, wherein in the “door opening mode” the fan is switched off with the door open, so that the user no unpleasant air flow is noticeable and, moreover, prevents ambient air in the device is inserted.
• a maximum fan power is set when the fan is started for the first time.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Physics & Mathematics (AREA)
• Mechanical Engineering (AREA)
• Thermal Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Devices That Are Associated With Refrigeration Equipment (AREA)

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• 2013
  • 2013-05-16 EP EP13002586.9A patent/EP2664877A3/fr not_active Ceased
  • 2013-05-16 DE DE102013008549A patent/DE102013008549A1/de active Pending

Non-Patent Citations (1)

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